GMPLS interoperability test in Super SINET
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GMPLS interoperability testin Super SINET
Shoichiro Asano
The National Institute of Informatics
Hirokazu Ishimatsu
Japan Telecom Co., Ltd.
Super SINET
• Ultrahigh-speed network intended to develop and promote Japanese academic researchers by strengthening collaboration among leading research institutes.
• Operated by The National Institute Informatics (NII) which is an independent administrative corporation.
• Besides the academic network, there is the research project studying the next generation optical networks.
Research project
• Focus on optical technologies– Physical layer
• 40G bit/s transmission• Dispersion compensation• Optical regeneration
– Control plane• GMPLS interoperability• GMPLS LSP recovery
Testbed
• Cisco 12400 series routers
• Calient 3D-MEMS-based PXCs
• Mitsubishi bascule-type PXC
• NEC DWDM systems
• 30-km-long Installed fiber
Photograph of testbed
Control Plane(Ethernet Hub)Control Plane(Ethernet Hub)
3D-MEMS PXCs(Calient DiamondWave)
3D-MEMS PXCs(Calient DiamondWave)
Bascule type PXC(Mitsubishi PXC)
Bascule type PXC(Mitsubishi PXC)
Routers(Cisco 12400)
Routers(Cisco 12400)
DWDM(NEC SpectralWave,
backside of these machenes)
DWDM(NEC SpectralWave,
backside of these machenes)
Bascule type optical switch
0 2 4 6 8 10 12 14 16 18 20Time [ms]
Opt
ical
pow
er[a
rbitr
ary
unit]
B allP in
P iezoac tuator
S pring
P olymerwaveguide film
T ransmission
A ir gap
Reflec tion
Polymer waveguide filmInput1
Input2
光 出 力
Output2
Output1
Fiber
•16x16 switching matrix•0.3 ms switching speed
What we have achieved
• All-optical end-to-end path rerouting• PXC, WDM, and IP router integration• Full set of generalized multi-protocol label
switching (GMPLS) protocol suite– RSVP-TE, OSPF-TE, LMP and LMP-WDM
• Two types of PXCs– 3D-MEMS, bascule type optical switch
• Installed cable as one of data links• Four vendor interoperability
Test configuration
Site B
WD
M_B
Control plane network
PXC_A PXC_B
PXC_C
Control plane network (Fast Ethernet)Data plane network (OC-48 POS, 1310nm)
99:1 coupler
Optical power monitor
Router_A Router_B
PXC_A, PXC_B: Calient DiamondwavePXC_C: Mitsubishi PXCRouter_A, Router_B: Cisco GSR 12400WDM_A, WDM_B: NEC SpectralWave
WDM_ASite A variable attenuator
Installed cable (30km)
3D-MEMS
Bascule optical switch
Path setup
Site B
WD
M_B
PXC_A PXC_B
PXC_C
Router_A Router_B
WDM_ASite A variable attenuator
Signaling for setup (RSVP-TE)Signaling for setup (RSVP-TE)
Fault detection, localization
Site B
WD
M_B
PXC_A PXC_B
PXC_C
Router_A Router_B
WDM_ASite A variable attenuator
Path error(RSVP-TE)Path error(RSVP-TE)
Link error(LMP-WDM)Link error(LMP-WDM)
Link error(LMP-WDM)Link error(LMP-WDM)
Signaling for deletion (RSVP-TE)Signaling for deletion (RSVP-TE)
Find alternative route, restoration
Site B
WD
M_B
PXC_A PXC_B
PXC_C
Router_A Router_B
WDM_ASite A variable attenuator
Topology discovery
Find alternative route
Signaling for setup (RSVP-TE)Signaling for setup (RSVP-TE)
××
Message sequence
ChannelStatus: SF
ChannelStatus: SF
PathTear PathTearPathError
0
39
79 PathTear
Path3675
4158
Path Path Path
Resv
ResvResvResv4187
3782
PXC_A PXC_BRouter_A Router_BPXC_CWDM
Path deletion
Fault localization
Topology discovery,Rerouting calculation
Alternative LSP setup
Time [ms]
Probably be able to shorten by router software improvement
Probably be able to shorten by router software improvement
Pre resource allocation (i.e. protection) may improve this Pre resource allocation (i.e.
protection) may improve this
Measured optical power during restoration process(three PXCs test)
-55
-50
-45
-40
-35
-30
0 1 2 3 4 5 6 7 8 9 10 11 12Time [sec]
Opt
ical
pow
er [dB
m]
Conclusion
• Interoperability of PXCs, WDMs and IP routers has been successfully demonstrated using an installed fiber.– Two types of PXCs; bascule type optical switch,
3D-MEMS • Four major GMPLS protocols have been
interoperated.– RSVP-TE, OSPF-TE, LMP, and LMP-WDM
• Successful rerouting of all-optical path has been performed by the signaling via out-of-band control plane network.
Network configuration(two PXCs test)
Site B
WD
M_B
Control plane network (Ethernet LAN)
PXC_A PXC_B
Control plane network (Fast Ethernet)Data plane network (OC-48 POS, 1310nm)
99:1 coupler
Optical power monitor
Router_A Router_B
PXC_A, PXC_B: Calient DiamondwaveRouter_A, Router_B: Cisco GSR 12400WDM_A, WDM_B: NEC SpectralWave
WDM_ASite A variable attenuator
Installed cable (30km)
3D-MEMS
Restoration procedure- Path setup -
Site B
WD
M_B
PXC_A PXC_BRouter_A(Initiator)
Router_B(Terminator)
WDM_ASite A variable attenuator
Signaling for setup (RSVP-TE)
Restoration procedure- Fault detection, localization -
Site B
WD
M_B
PXC_A PXC_BRouter_A(Initiator)
Router_B(Terminator)
WDM_ASite A variable attenuator
Path error(RSVP-TE)
Link error(LMP-WDM)
Link error(LMP-WDM)
Signaling for deletion (RSVP-TE)
Restoration procedure- Find alternative route, restoration -
Site B
WD
M_B
PXC_A PXC_BRouter_A(Initiator)
Router_B(Terminator)
WDM_ASite A variable attenuator
Topology discovery(OSPF-TE)
Find alternative route
Signaling for setup (RSVP-TE)
××
Message sequence(two PXCs test)
ChannelStatus: SD
ChannelStatus: SF
PathTear
PathTearPathError
0
1350
2072PathTear
Path6354 Path PathResvResvResv
6775
PXC_A PXC_BRouter_A(Initiator)
Router_B(Terminator)WDM
PathError
PathTear
Path Path PathResv
ResvTearResvResvTearResv
ResvTear PathTearPathTear
ChannelStatus: SF
3045
4573
49
Fault localization
Path deletion
Topology discovery
Rerouting calculation
Alternative path setup
Time[ms]
Probably be able to shorten by router software improvement
Probably be able to shorten by router software improvement
Pre resource allocation (i.e. protection) may improve this Pre resource allocation (i.e.
protection) may improve this
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